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Signet Maritime Corporation is a domestic and international marine transportation company specializing in harbor tugboat operations, ocean rig transport, heavy-lift cargo barges, petroleum transport and marine logistics. The Signet fleet consists of 35 vessels including 25 ocean and harbor tug boats, 7 ocean and inland barges and 3 ASD Z-Drive tugboats under construction to handle LNG shipments, harbor docking and ocean towing. Signet owns and operates a full service shipyard and husbanding facility for vessels ranging from 25’ to 200’ in size.